public int addteacher(TeacherModel teacherModel) { UserService userService = new UserService(); int uid, tid = 0; uid = userService.insert(teacherModel.Tname, "123456", 2); if (uid != 0) { teacherModel.Uid = uid; TeacherService teacherService = new TeacherService(); tid = teacherService.insert(teacherModel); //这里将来要模拟实现事务,如果tid为0,则删除user表里的记录 } return tid; }